Long Formal Dresses
Long formal dresses are the ultimate choice for black-tie events, formal dances, and weddings. Choose from mermaid-style, A-line gowns, or modern sheath designs, made with luxurious fabrics like velvet, satin, and glitter mesh. Sequins and rhinestones add a touch of glam, while long sleeves, off-the-shoulder, strapless, and open-back details offer a range of stunning options for any occasion.
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Product Recommendations
Embrace the Season in Stunning Long Formal Dresses for Every Spring Celebration
Welcome the beauty of spring with Windsor’s captivating collection of long formal dresses, designed to make a statement in the season’s most breathtaking colors. Whether you're attending a garden wedding, a spring engagement party, or a sunset gala, explore silhouettes ranging from sleek mermaid gowns to timeless A-line dresses in hues that complement every occasion.
Discover long formal dresses in fresh seasonal shades, like romantic blush and soft pastels for a dreamy spring aesthetic, elegant greens that reflect nature’s renewal, and shimmering golds that catch the light effortlessly. If you love to stand out, rich purples offer a regal touch, while crisp whites bring an effortlessly chic, timeless appeal. Each shade is thoughtfully curated to elevate your style and enhance the magic of the season.
Designed for both beauty and comfort, our long formal dresses feature thoughtful details like functional pockets, adjustable straps, and breathable fabrics that move with you. Whether you prefer the effortless grace of a flowing maxi dress, the sophistication of a structured trumpet gown, or the modern charm of a chic midi, find a silhouette that flatters your figure and enhances your confidence.
For semi-formal occasions, explore dresses with lace-up backs, thigh-high slits, or delicate embroidery—perfect for spring weddings, rooftop soirées, or upscale brunches.
Complete your look with trending necklines like off-the-shoulder, square, or high necklines, and add a touch of sparkle with rhinestone accessories to complement your chosen color. Step into every event radiating confidence and style.
Browse Windsor’s collection of long formal dresses in all the season’s most enchanting colors, available in-store or online, and find pieces that bring elegance and excitement to every spring celebration!
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Jane Formal High Slit Satin Dress
Special Occasion
Create a head-turning moment with a formal dress that brings the luxe to your evening. Jane features a sleeveless square neckline, adjustable spaghetti straps, a high side slit for a show of leg accented with ruffle trim on the A-line silhouette. The dress is composed of a lined satin fabric that offers a form hugging fit with a moderate stretch. Complete look with rhinestone heels and a clutch.
Fit & Features
- Sleeveless, square neckline, adjustable spaghetti straps
- Adhesive bra recommended
- Ruffled high side slit
- A-Line silhouette
- Form-fitting design
- Smooth satin fabric, moderate stretch
- Fits true to size
Style Number/Barcode: 05002-1630
Category Name: Long Formal Dresses
Price: $9.97 $49.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Annabelle Knit Satin Formal Dress
Special Occasion
Wrap yourself in the sleek and stunning Annabelle knit satin formal dress for effortless glamour! She features a sleeveless cowl neckline with a padded bust, adjustable spaghetti straps for a customized fit, front ruching at the waist, and a floor-length, wrap-front skirt with a fitted A-line silhouette. Style this long dress with sparkling rhinestone earrings.
Fit & Features
- Sleeveless cowl neckline, adjustable spaghetti straps
- Padded cups, no bra required
- Empire waist seam, front ruching
- Floor-length, wrap-front skirt, A-line silhouette
- Satin knit fabric
- Form-hugging fit, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1876
Category Name: Long Formal Dresses
Price: $59.90
Availability: Out of Stock
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Eliza Sleeveless Formal Mermaid Dress
Special Occasion
Show off your gorgeous curves in the sleek and stunning Eliza formal dress. She features a sleeveless sweetheart neckline with a twist-front design, a padded bust with a chic keyhole cutout underneath, spaghetti straps, a high waist seam, and a floor-length mermaid silhouette. The smooth knit fabric offers plenty of stretch. Perfect for weddings, complete your best-dressed guest look with strappy heels.
Fit & Features
- Sleeveless sweetheart neckline, twist-front design
- Padded bust, no bra required, keyhole cutout underneath
- Spaghetti straps, back zipper, hook and eye closure
- High waist seam
- Floor-length, form-fitting, mermaid silhouette
- Smooth knit fabric, plenty of stretch
- Runs true to size
Style Number/Barcode: 05002-7010
Category Name: Long Formal Dresses
Price: $9.97 $54.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Anne Formal Lattice Satin Dress
Special Occasion
Stun in satin as you create a one-of-a-kind entrance in our Anne dress! She features a sleeveless bodice, a square neckline, padded cups, and spaghetti straps that lead to a lattice back design. Her empire waist leads to a floor-length skirt that is accented with pockets and a stunning waist-high slit. The dress is composed of a satin fabric that offers a relaxed fit with minimal stretch. Includes a back zipper closure. Complete look with a satin clutch and heels.
Fit & Features
- Sleeveless square neckline, padded cups
- Spaghetti straps, lattice-back design
- Empire waist, lower back zipper and hook and eye closure
- A-line silhouette, high side slit
- Hidden side pockets
- Satin fabric, minimal stretch
- Runs true to size
Style Number/Barcode: 05002-6373
Category Name: Long Formal Dresses
Price: $14.97 $109.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Plus Kaleigh Off Shoulder Dress
Special Occasion
Keep a classy profile in our floor length Kaleigh dress! She features an off the shoulder neckline with ruched detailing on one shoulder and ruched detailing along the sides to create a gracefully cascading effecting leading to a sexy high slit. She is double lined with a soft to the touch knit fabric that offers a curve hugging fit that provides plenty of stretch.
Special Occasion products cannot be returned to any retail locations.
Style Number/Barcode: 15002-0100
Category Name: Long Formal Dresses
Price: $29.97 $49.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Online Only
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Marylou Lace Mesh Plunge Neck Formal Dress
Special Occasion
Bring the romantic allure to the evening affair in the Marylou lace mesh plunge formal dress! She embodies flirtatious style in a sleeveless plunge V-neckline with a built-in padded bust and adjustable spaghetti straps on her empire waist bodice. The sparkly embroidered lace mesh fabric effortlessly flows into a floor-length silhouette with a high-side slit to showcase some legs. She also features a curve-conscious silhouette to flaunt your stunning figure! Complete the look in an elegant hair clip.
Fit & Features
- Plunge V-neckline, adjustable spaghetti straps
- Adhesive bra recommended, built-in padded bust
- High side slit, back zipper, hook and eye closure
- Empire waist, form-fitting silhouette
- Floor-length hem
- Sparkly embroidered lace mesh fabric, full knit lining, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-7177
Category Name: Long Formal Dresses
Price: $69.90
Availability: In Stock
Available Color: BLACK
Available Size: XS, S, M, L
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Delana Formal One-Shoulder Satin Dress
Special Occasion
Keep it luxe in the stunning Delana dress that brings the sophistication to your special evening. She features a unique one-shoulder neckline with a charming bow accent on the left shoulder, a floor-length mermaid silhouette, and is composed of a captivating satin-like fabric. Complete your special occasion outfit with rhinestone earrings.
Fit & Features
- One-shoulder neckline
- Bow accent on the left shoulder
- Floor-length mermaid silhouette
- Satin-like fabric, moderate stretch
- Form-hugging fit
- Runs true to size
Style Number/Barcode: 05002-0974
Category Name: Long Formal Dresses
Price: $14.97 $64.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Maisy Cutout High Slit Satin Formal Dress
Special Occasion
Make a showstopping entrance in the always stunning Maisy satin formal dress! She features a sleeveless V-neckline with a twist-front design, spaghetti straps, an alluring front cutout at the waist, and a floor-sweeping A-line silhouette with a chic high side slit to show off some leg. The satin-knit fabric showcases a luxe sheen for a glamorous vibe. Style with rhinestone heels for your next gala!
With a sleek finish and effortless shine, this dress is pure luxe. Want more? Browse our stunning satin prom dresses or find a celebration-ready style in our party dresses.
Fit & Features
- Sleeveless V-neckline, twist-front design
- Spaghetti straps
- Front waist cutout, high waist seam
- Floor-length hem, flowy A-line silhouette, side slit
- Satin-knit fabric, lining at the bust, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-6848
Category Name: Long Formal Dresses
Price: $74.90
Availability: In Stock
Available Color: GOLD
Available Size: XS, S, M, L
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Becka Formal Mesh High Slit Column Dress
Special Occasion
Elevate your wardrobe with the chic Becka formal column dress for fancy soirees! Crafted from sheer mesh fabric for a luxurious look, the long dress is designed with sheer long bell sleeves and a striking fitted column silhouette with a sultry slit.
Fit & Features
- Mesh fabric, sewn-in knit lining, moderate stretch
- Sheer mesh long bell sleeves
- Square neckline
- Fitted column silhouette
- High side slit, long-length hem
- Runs true to size
Where to Wear:
Prom, weddings, bridesmaids, fancy date nights, and rooftop parties.
Style Number/Barcode: 05002-7710
Category Name: Long Formal Dresses
Price: $54.90
Availability: In Stock
Available Color: BLACK, BURGUNDY
Available Size: XS, S, M, L, XL
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Gabby Formal Mesh Strapless Ruffle Long Dress
Special Occasion
The Gabby formal long dress gives an aurora of dreamy romance with flirty ruffles, a high side slit for movement, and a form-hugging silhouette.
Unapologetically bold, this dress is all about confidence. Keep the luxe look going with our stunning strapless prom dresses or discover the perfect fit among our stylish wedding guest dresses.
Fit & Features
- Mesh-lined fabric, moderate stretch
- Strapless neckline, non-slip grip lining
- Side zipper and hook-eye closure
- Asymmetrical ruffle trim throughout
- Form-hugging silhouette, high side slit
- Runs true to size
Where to Wear:
Prom, weddings, bridesmaids, garden parties, fancy dates
Style Number/Barcode: 05002-7801
Category Name: Long Formal Dresses
Price: $64.90
Availability: In Stock
Available Color: PINK, YELLOW
Available Size: S, M, L, XL
Product Badge:- Best Seller
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Sophie Glitter Knit Mermaid Dress
Special Occasion
Effortlessly elegant, the Sophie glitter knit mermaid dress would be a stunning choice for a formal gala. She features a square neckline, short puff sleeves, a partially open back with a lace-up strappy design for a customized fit, a high waist seam, a floor-length hem, and a mermaid silhouette with a high front slit to showcase your heels. The glitter knit fabric offers a moderate stretch. Complete the look in this long dress with rhinestone statement earrings.
Fit & Features
- Square neckline
- Short puff sleeves
- Open back, lace-up strappy design, tie closure
- High waist seam
- Floor-length hem, mermaid silhouette, front slit
- Glitter knit fabric, moderate stretch
- Sticky bra or pasties recommended
- Runs true to size
Style Number/Barcode: 05002-2515
Category Name: Long Formal Dresses
Price: $74.90
Availability: In Stock
Available Color: NAVY
Available Size: XS, S, M, L
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Lala High Slit Satin Formal Dress
Special Occasion
Flaunt your natural beauty in our fabulous Lala dress! She features a trendy pleated cowl neckline with a slim-fit bodice, a floor-sweeping silhouette with a semi-high slit that shows just a hint of skin, and a form-hugging fit. The smooth satin fabric offers a moderate stretch. Pair this gorgeous dress with a sleek ring set to add some glamour to your look for your special occasion.
Fit & Features
- Pleated cowl neckline and square back, spaghetti straps
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Slim-fit bodice, form-hugging fit
- Floor-length silhouette with a subtle side slit
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Stretch satin fabric, non-see-through
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-1866
Category Name: Long Formal Dresses
Price: $9.97 $59.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Roseanne One-Shoulder Satin Dress
Special Occasion
Captivate with elegance in this one-shoulder long satin dress, ideal for your next formal soiree, prom, or black-tie wedding. The luxurious stretch satin contours around the waist, revealing an alluring front-wrap design that showcases the legs, allowing you to walk and move with ease. The asymmetrical neckline serves as a sleek backdrop, perfect for highlighting a trendy choker necklace or bold chandelier earrings.
Fit & Features
- One-shoulder neckline, spaghetti strap
- Ruched side seam
- Wrap-front design, asymmetrical side slit
- Floor-length, form-fitting silhouette
- Satin fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-0813
Category Name: Long Formal Dresses
Price: $19.97 $59.90
On Sale: Yes
Availability: In Stock
Available Color: BROWN
Available Size: XS, S
Product Badge:- Sale
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Coralie Off Shoulder Front Slit Dress
Special Occasion
Look and feel elegant for your next fancy night out in our gorgeous Coralie formal dress. Her classy fold-over, off-the-shoulder neckline will pair beautifully with a sparkling necklace. Her front slit lets you show off those glittering heels you've been wanting to wear! The formal long dress is composed of a crepe fabric that offers a moderate stretch and includes a knit mini-length lining. Complete your look with classic block heels.
Fit & Features
- Off-the-shoulder neckline with a fold-over design
- Back zipper and hook and eye closure
- Ruching at center back
- Floor-length hem with a front slit, form-hugging fit
- Crepe fabric, knit mini-length lining, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-7131
Category Name: Long Formal Dresses
Price: $29.97 $59.90
On Sale: Yes
Availability: Out of Stock
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Mona Formal Plunging Glitter Dress
Special Occasion
Take the plunge into glamour as you stun in our breathtaking Mona dress! She features a sleeveless bodice, a plunging V neckline with pleated dealing, and sheer adjustable spaghetti straps that cross at the back. Her slim fit waist leads to a sweeping A-line silhouette. She stands out with her glitter accents and caviar beaded detailing set in a romantic pattern. The dress is composed of a lined tulle fabric that offers a relaxed fit with minimal stretch. The knit lining includes two high slits to reveal a hint of skin under the semi-sheer tulle fabric. Complete your gorgeous look with rhinestone duster earrings and a new pair of heels.
Fit & Features
- Plunging V neckline with pleated detailing
- Sheer adjustable spaghetti straps
- Cross back design
- Back zipper and hook and eye closure
- High waist leading to a floor-length skirt
- A-line silhouette
- Semi-sheer tulle fabric with glitter and beaded details
- Knit lining with dual front slits
- Runs true to size
Style Number/Barcode: 05002-0326
Category Name: Long Formal Dresses
Price: $19.97 $69.90
On Sale: Yes
Availability: Out of Stock
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Raelynn Satin Cross Strap Dress
Special Occasion
Set off sparks in the Raelynn dress that brings the sultriness for your next evening out. The Raelynn formal satin dress features a plunging V-neckline that styles well with your favorite statement necklaces and a bold open back with adjustable cross straps. The fitted bodice leads to a curve-hugging mermaid silhouette that is accented with a sexy front, thigh-high slit. Complete your look with sparkling rhinestone earrings and a matching clutch to bring glamour to your formal evening outfit.
Fits & Features
- Plunging v-neckline, adhesive bra recommended
- Flattering princess seams at the bust
- Adjustable spaghetti straps, cross back
- Floor-length Mermaid silhouette, front thigh-high slit
- Smooth satin fabric, minimal stretch
- Back zipper closure
- Fits true to size
Style Number/Barcode: 05002-0116
Category Name: Long Formal Dresses
Price: $29.97 $54.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Clearance
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Iliana Cowl Neck High Slit Satin Column Dress
Special Occasion
Level up your look in the gorgeous Iliana satin formal dress! The corset-style bodice will create a snatched waist while the fitted column silhouette showcases your curves.
With a smooth, luminous finish, this dress was made to shine. Keep the luxe look going with breathtaking satin prom dresses or go for a sophisticated statement with our wedding guest dresses.
Fit & Features
- Stretchy satin-knit fabric, lined
- Sleeveless sweetheart neckline, padded bra cups
- Adjustable spaghetti straps, back zipper with hook-eye closure
- Corset-style bodice
- High side slit
- Floor-length fitted column silhouette
- Runs true to size
Where to Wear:
Prom, weddings, bridesmaids, black-tie parties, and milestone celebrations.
Style Number/Barcode: 05002-8227
Category Name: Long Formal Dresses
Price: $59.90
Availability: In Stock
Available Color: RED, HUNTER
Available Size: S, L, XS, M
Product Badge:- Best Seller
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Ashley Sleeveless Bow Mermaid Formal Dress
Special Occasion
Both feminine and sweet, the Ashley sleeveless bow mermaid formal dress will have you feeling like a princess! The back bow tie design and ruched seam create a flattering mermaid silhouette while the high slit gives effortless allure.
Fit & Features
- Smooth knit stretchy fabric, stretchy knit lining
- Adjustable spaghetti straps, crisscross back
- Back bow tie design, zipper and hook-eye closure
- High front slit
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Mermaid silhouette, floor-length hem
- Runs true to size
Where to Wear:
Prom, black-tie galas and weddings, fancy engagement parties
Style Number/Barcode: 05002-8290
Category Name: Long Formal Dresses
Price: $69.90
Availability: In Stock
Available Color: NAVY, HUNTER
Available Size: XS, S, M, L
Product Badge:- Best Seller
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Lucille Formal Satin Mermaid Dress
Special Occasion
The Lucille formal satin dress will have you looking and feeling radiant and luxe! The dress captivates with a lace-up back, mermaid silhouette, and high front slit for effortless allure.
Fit & Features
- Lined satin knit fabric, minimal stretch
- Sleeveless square neckline, padded bust, adjustable spaghetti straps
- Open lace-up back design, zipper and hook-eye closure
- Fitted bodice, front ruched seam, high-cut slit
- Mermaid silhouette, floor-length hem
- Runs true to size
Where to Wear:
Prom, weddings, bridesmaids, black tie galas, red-carpet events, nights at the opera or theatre, big milestone celebrations
Style Number/Barcode: 05002-9078
Category Name: Long Formal Dresses
Price: $49.90
Availability: In Stock
Available Color: CORAL
Available Size: XS, S, M, L
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Londyn Formal High Slit Convertible Dress
Special Occasion
Showcase your unique style with a convertible formal dress that allows you to show off multiple styles! Londyn features a large slit at the bodice that allows you to create a one-shoulder neckline, boat neckline, halter neck, or an off-the-shoulder neckline. The slim-fit bodice leads to a curve-hugging A-line silhouette with a high side slit. The dress is composed of a smooth knit fabric that offers a form-hugging fit with a moderate stretch. Complete the look with heels and a clutch.
Fit & Features
- Large slit at the bodice
- Multiple ways to wear neckline
- A-line silhouette
- High side slit
- Smooth knit fabric
- Form-hugging fit, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1301
Category Name: Long Formal Dresses
Price: $9.97 $49.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Lori Formal Sequin Lace-Up Long Dress
Special Occasion
Gorgeous sequins make the Lori formal dress a sexy standout! With an alluring strappy lace-up back, high front slit for movement, and a striking form-hugging silhouette.
All eyes are on you in this radiant dress. If sparkle is your signature, discover stunning sequin prom dresses or opt for effortless sophistication with our eye-catching formal dresses.
Fit & Features
- Sequin scroll mesh fabric, stretchy knit lining
- Sleeveless sweetheart neck, spaghetti straps
- Lace-up open-back design, lightly padded bust
- Back zipper and hook-eye closure
- Form-hugging silhouette
- High-cut front slit, floor-length hem
- Runs true to size
Where to Wear:
Prom, black tie galas, big parties, birthday celebrations
Style Number/Barcode: 05002-2900
Category Name: Long Formal Dresses
Price: $109.90
Availability: In Stock
Available Color: BLACK
Available Size: XS, S, M, L
Product Badge:- Ships Free
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Jaime Feather Trim Velvet Mermaid Dress
Special Occasion
Bring the dramatic flair to your next formal soiree in the stunning Jaime feather trim velvet mermaid dress. She features a sleeveless square neckline with a chic marabou feather trim, spaghetti straps, a high waist seam, ruching down the side leading to a thigh-high slit, and a fitted, floor-length, mermaid silhouette. The luxe velvet fabric offers a moderate stretch. Style this dress with a glitzy evening bag.
Fit & Features
- Sleeveless square neckline, marabou feather trim
- Spaghetti straps
- High waist seam, ruching down the front, high slit
- Floor-length hem, form-hugging fit, mermaid silhouette
- Smooth velvet fabric, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2608
Category Name: Long Formal Dresses
Price: $19.97 $79.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Tabitha Formal High Slit Crepe Dress
Special Occasion
Make your night one to remember in a formal long dress that stands out at your special event. Tabitha features a sleeveless square neckline, supportive padded cups, and spaghetti straps that lead to a lace-up back. Her slim-fit waist leads to a flattering A-line silhouette that is accented with a high side slit. She is composed of a crepe fabric that offers a form-hugging fit with a moderate stretch. Complete the look in this long dress with rhinestone heels and a sphere clutch.
Fit & Features
- Sleeveless square neckline, spaghetti straps
- Built-in padded bust, no bra required
- Lace-up back, tie closure
- Back zipper closure
- High waist seam, A-line silhouette, high side slit
- Crepe-lined fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-2036
Category Name: Long Formal Dresses
Price: $9.97 $69.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Juliet Formal High Slit Dress 2
Special Occasion
Radiate effortless elegance in our sophisticated satin Juliet gown! She features adjustable spaghetti straps, a V-neck seamed bodice with light padding at bust, a high-seam waist, and a long, gently pleated A-line skirt with pockets at either hip and a dramatic center front slit. Juliet is fully lined and made from a smooth, shiny satin-like woven fabric with a touch of stretch. Pair this beautiful dress with a shimmering rhinestone necklace for a glamorous look.
Shop Juliet In More Colors: Juliet Formal High Slit Dress
Fit & Features
- Lined satin-like woven fabric, slight stretch
- V-neckline with padded cups
- Adjustable spaghetti straps
- Fitted high waist, hidden side pockets
- Elongated floor-length silhouette with high side slit
- A-line fit
- Runs true to size
Style Number/Barcode: 05002-0896
Category Name: Long Formal Dresses
Price: $19.97 $99.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Ships Free